all: graph.png
	pkill -SIGUSR1 -f 'feh (.* )*graph\.png( .*)*'

%.in: %.dot
	sed "$(shell sed 's/^#DEFINE \(\S\+\) \(.*\)$$/s@\1@\2@g/; t; d' "$<")" "$<" > "$@"

%.png: %.in
	dot -Tpng -o$@ $<

.PHONY: all